Brake mechanism.



H. S. VALENTINE. BR'AKE MEGHANISM. APPLICATION FILED MAY e. 191s.

Patented Ot.. 20, 1914.

, UNiTEnsTATEs @PATENT onirica.

VALENTTNE, OEEEADING, PENNsrLvANIA,Ass1GNoR To EE HERBERT s. y l l `:[Nefy l CRANE ANnnoIsT woEKs, OEREAEING,I rENNsYLvANIA.

i l 'BRAKEMECHANISMT l l 1,114,317. Specicationpf Letters Parent 1 a Patented oct. 2o, 1914.

Appneatibn inea May e', 191s. serial No.7e5j7`1.)

TowaZZ 'whom it may, concern:

i j Be it'known that "I, HERBERTS. TINE, a citizen of theUnited States,"`re`siding at Reading, in the county of BerksandState of Penney vania, have invented certain 'new and useful Improvements in Brake Mechanism, of which the following is a specification. f

My present invention relates to improve"-I vments in bralre operating mechanisms'and it v1s yintended more particularly for use in 'connection with electric "trolley hoists of the' character described andillustrated inl Letters Patent No. 1,058,497, granted to me on April 8th, 1913.

` The object' of the invention is to provide a simple and eifective mechanism for operating the brake on a motor used in connection with hoists such as described in the-` above noted patent, whereby, the' operation of a hand wheel in eitherdirection "will, through the medium ofv the correlated parts,`fapply the brake. y y l My invention further comprehendsiall of the various novel featuresmof 'construction and arrangement hereinafter' more definitely described.

` ary conductors 15 ln the accompanying drawings, the ligure is a side'elevational`r view of an electric hoist conveniently embodying my invention.

. ln said ligure the elevated tramway: is formed of the I-beam 5, whose lower laterally extending langes6 and 7 conveniently provide suitable tracks for the wheels 8 and 9 of the traction carriage 10, which is provided with suitable trolleys 12 and 14-for collecting electric and 16, extending parallel with tliel-beam 5, and respectively disposed upon opposite sides thereof.

The trolleys 12 and 14 are respectively mounted in a harp 18 carried by a plunger' 19, which is mounted to reciprocate in a frame 20 and normally pressed into engagement with the electric conductors '15 and 16 by the spring 21 bearing lagainst a collar 22 on said plunger. l t y The carriage 10 is provided with forwardly extended frames 24 and 25, to which the transversely extending horizontal supporting plate 26 is secured. Said plate 26 provides a convenient support for the elec tric motor 28, whose armature shaft 29 carries a pinion 30 in toothed engagement with the gear 31 on the countershaft 32, which is from thebearing bloclr42,which is secured current from the stationv journaled bearings 233 *theframes 24 l and25, and whichfc'arries theV gears 34 and 35 Lvin toothedengagement withthe gears36 and',` 37, forming-fthe flanges'of the `forward wheels 8 and V 9 ofthe carriage. y' The supporting plate 26 isextendedtoward ytheleft and provides 'lk an. convenient, supporty for, the automatic 1` brake,` which zcomprises the opposed aws 38 and`39 pivotally suspended to ,the plate 2,6 by boltsfThe jaws 38 and are providedwith a facing of leatherv 140,. or

other suitable material, and embrace the brake drum 41 Awhich is carriedby theshaft `29. vSaid jaws are prcvidednear their free ends with spring cups forthe springs 44v and 45, whose tension may be 'conveniently varied yby the'bolt 46, which isthreaded on its opposite ends and extends throughsaid cup 4 3 and springs "44 and45, andfis prom vided with V,nuts v47` and 4Sk and washers 49k and 50 bearing against-'the outer endsof'the respective 'springs 44 and 45.

From the bearing block 42 dependsa supl porting postil, carrying at its lower enda bearing 52 for the rockf'shaft 53 which carriesat one end a centrally pivoted lever 54y whose opposijtely extending V,arms are re-` spectively connected bylinks `55Uand 56 ,with thek free eXtreniitiesofthe jaws k38 Aand ,39.v The otherend of said'.r'ockshaft53; carries a lever57, thefffree end of which is connected by the link` 58M to theyokefplate 59, whichis v maintained in proper alineme'ntywith the plane of the laxis of the'contr'oller sliaft`60 of the controller 61 by theslot'62 in said plate 59, through which said shaft 60,y eX- tends. Said yoke-plate 59 is substantially triangular and carries rollers 63 and 64, disposed upon opposite rsides of the` plane of the major axis of the slot 62, to traverse theedge of the cam 65, which is mounted `on the end ofthecontroller shaft 60 and arranged to `be rotated therewith when the controller is actuated vto direct electric current from the electric conductors through the motor 28 for propelling the carriage 10. It may be here noted that any ro l95 and arranged tation of the cam 65 in leither direction of 'Y while the right hand extended end 99 of said spring will be carried around by thev pin 9.5, the rotation being limited by the edge 10,0 of the projection engaging the pin 93, the tension of the spring 94 being'suilicient to return the shaft to its normal position when released.

t y invention is particularly advantageous in that the automatic brake for the propelling motor of the carriage being manually released by mechanically actuated mechanism, instead of byelectric power, said motor may be freed and the carriage shifted even though the electrical conductor which may be of any Well known construction, have closed the circuit.

The means for simultaneously effecting the actuation of the controller and brakereleasing mechanism comprises a miter gear 66 on the shaft 60, in toothed engagement with the miter gear 67 on the shaft 68, which is journaled in the bearing frame 70, attached to the controller casing, and which carries the bifurcated yhead 7l,v toi'which is pivotally connected the bifurcated head 72 on the shaftA 7 3 of the hand `operating wheel 7 4f by the link v75, the pintle'76, which connects said linkt'o the head 7 l being disposed 1n a plane normal the plane of the pintle be dead. 77 which connects said link toA thehead 72. Having thus described my invention, I

It will be obvious thatv the construction claim: i i i i' y 60 thus described aifordsa un'versal joint con In a brake operating mechanism, a lever,

. ifs patted to the block nection between" the controlling hand-wheel andthe shaft of the controller, whereby the operator'may actuate ycontroller and release lthe brake from whatever position it may be most convenient 4for him to 'cause the hand-wheel to assume.A The casing 78 of the hoisting mechanism is suspended from the carriage l0 by the side plates 7 9,4 which are connected therewith by the brackets 8l, and which provide a suitable'support for the means for actuating said lever comprising a yoke plate, Vconnecting the free, end of the lever with` the yoke plate, a horizontal shaft passing through the yoke plate, alcam carried vsaid shaft and rotatable therewith, a pair of rollers carried by the yoke plate andarranged to traverse the edge of the cam, and means for rotating said shaft including amiter gear on the shaft, a verticalshaft, a miter gear on the vertical shaft in'mesh with the gear on the horizontal shat,"a-head piece carried by the vertical shaft, a hand-wheel shaft, a head piece carried bythe hand-wheel shaft, a link connecting said head pieces, and a wheel on the hand-wheel shaft, whereby rotation of said wheel either direction willactuate resistance box 83. c

` he drum shaftS is suitablyjournaled in the casing 7 8, and carries the winding drums 85'v and 86 upon respectively opposite Asides of the casing 7 8. Saiddrums are arranged to raise and lower the lifting l10`0l 8 7, which 88 through which the rope or cable S9 loosely extends, with its opposite ends wound around and secured vto `In testimony whereof I aiEX my the respective Cllllllsl It will be obvious in presence of two Witnesses.

rotated from its i y l Shaft f HERBERT s. VALENTINE.

the brake mechanism.

signature that when'ritt-1er` t noiinally inoperative position shown in the j draai-'figa for instance; a ClQQkWiSe direc tin, the left hand Xtenddl ad 98 af. the Sprir1g`94 W1l`be`1taaed'by the Pin' 96j 

